^(18)F-FDG PET-CT与MRI对肺部恶性肿瘤诊断的对照研究

Compairing ^(18)F-FDG PET/CT with MRI for malignant neoplasms of lung

目的 :探讨^(18)F-FDG PET-CT与MRI对肺部恶性肿瘤的诊断价值。方法 :回顾性分析33例疑似肺部恶性肿瘤的^(18)F-FDG PET-CT与MRI资料,比较2种检查方法对肺部恶性肿瘤的敏感度及特异度,采用四格表资料χ2检验,比较2种检查方法的一致性。结果:33例中,经病理确诊及经临床、随访共同确诊恶性肿瘤30例,其中^(18)F-FDG PET-CT正确诊断29例,假阴性及假阳性各1例,敏感度96.67%,特异度66.67%;MRI正确诊断22例,假阴性8例,假阳性2例,敏感度73.33%,特异度33.33%。结论:^(18)F-FDG PET-CT与MRI在诊断肺部恶性肿瘤方面均有较高价值,但^(18)F-FDG PET-CT较MRI有更高的检出率及更低的误诊率,诊断价值更高。

Objective：To compare the application value of 18F-FDG PET/CT and MRI in the diagnosis of malignant neoplasms of lung. Methods：18F-FDG PET/CT and MRI images of 33 patients with suspected malignant neoplasms of lung were retrospec-tively analyzed. The detection rate and the misdiagnosis rate of the two methods were compared. The data were analyzed by chi-square test. When P〈0.05,the difference was statistically significant. Results：Among 33 patients with suspected malignant neoplasms of lung,30 patients were diagnosed by pathology or clinically and followed up. 29 cases were correctly diagnosed by 18F-FDG PET/CT,1 case false negative and 1 case false positive. The sensitivity was 96.67% and the specificity was 66.67%. MRI was correctly diagnosed in 22 cases,false negative in 8 cases and false positive in 2 cases. The sensitivity was 73.33%and the specificity was 33.33%. Conclusion：18F-FDG PET/CT and MRI has high value in the diagnosis of pulmonary malignant neoplasms,but 18F-FDG PET/CT has higher the detection rate than MRI,has higher value.